you may have charger system problems. how often is it driven? have you left it without being run for weeks/months at a time? i left my car off the road for 3 months without disconnecting the battery. battery drained and i was told that if the new battery didnt hold charge that i may have to have the charger system (alternator, etc) looked at
Driven every day. 15ish minute commute there and back 6 days a week plus multiple random drives.
I read that it takes 20 minutes to get a full charge, and maybe it's not driven 20 minutes everyday but sometimes there are 20+ minute drives.